基于5G的远程无线电频率传感 新的无线电定位参考信号
Marcin Bednarz1, Tomasz P Zielinski1
1Institute of Telecommunications, AGH University of Krakow, al. Mickiewicza 30, 30-059 Krakow, Poland.
Sensors (Basel, Switzerland)
|January 25, 2025
概括
这项研究表明,5G NR定位参考信号 (PRS) 可以使用雷达原理检测移动的物体,如高速列车. 更密集的PRS配置没有显著的优势,并且消耗更多的资源.
科学领域:
- 无线通信无线通信
- 雷达系统 雷达系统
- 信号处理 信号处理
背景情况:
- 5G新型无线电 (NR) 系统使用直角频率分割多重复合 (OFDM). 定位参考信号 (PRS) 是5G NR的组成部分,用于精确的位置确定.
- 传统的雷达系统对于物体检测是有效的,但将它们与蜂基础设施集成为增强传感能力提供了机会.
研究的目的:
- 调查使用5G NR PRS用于基于雷达的遥感应用的可行性.
- 评估PRS配置在检测移动物体,特别是高速列车 (HST) 在5G NR基站附近的性能.
主要方法:
- 应用直角频率分割复杂化 (OFDM) 雷达概念到5G NR PRS.
- 使用PRS飞行员进行光谱分析,估计了时间变化的通道脉冲响应重量.
- 模拟各种PRS配置,回声信号强度和观察窗口长度以评估性能.
主要成果:
- 证明频道脉冲响应重量的光谱分析可以检测移动的车辆并计算它们的时间和多普勒位移.
- 在雷达范围-速度图 (RVM) 上使用峰值-噪音-地面比率 (PNFR) 的定量比较显示了性能指标.
- 发现最密集的PRS配置并没有在增加资源需求的同时在检测性能方面取得显著的改进.
结论:
- 5G NR PRS 试点对于遥感应用非常实用,能够像雷达一样检测物体.
- 优化PRS配置至关重要,因为增加密度不会线性转化为更好的性能,并且可能是资源密集型.
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